The cholesterol level in 21 randomly selected adults is measured. After one month on a particular diet, each person's cholesterol level is again measured. The second cholesterol level reading was lower than t first for 7 people, the second reading was higher than the first for 10 people, and the readings were the same for 4 people. The sign test at the 0.05 significance level will be used to test the claim that the die does not affect cholesterol level. (a) What is the value of the test statistic used in this sign test? (b) What is the critical value in this sign test? (c) What is the correct conclusion of this sign test? O There is sufficient evidence to support the claim that the diet does not affect cholesterol level.

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Question 13
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The cholesterol level in 21 randomly selected adults is measured. After one month on a particular diet,
each person's cholesterol level is again measured. The second cholesterol level reading was lower than the
first for 7 people, the second reading was higher than the first for 10 people, and the readings were the
same for 4 people. The sign test at the 0.05 significance level will be used to test the claim that the diet
does not affect cholesterol level.
(a) What is the value of the test statistic used in this sign test?
(b) What is the critical value in this sign test?
(c) What is the correct conclusion of this sign test?
O There is sufficient evidence to support the claim that the diet does not affect cholesterol level.
O There is not sufficient evidence to support the claim that the diet does not affect cholesterol level.
O There is sufficient evidence to warrant rejection of the claim that the diet does not affect
cholesterol level.
O There is not sufficient evidence to warrant rejection of the claim that the diet does not affect
cholesterol level.
Transcribed Image Text:Question 13 > The cholesterol level in 21 randomly selected adults is measured. After one month on a particular diet, each person's cholesterol level is again measured. The second cholesterol level reading was lower than the first for 7 people, the second reading was higher than the first for 10 people, and the readings were the same for 4 people. The sign test at the 0.05 significance level will be used to test the claim that the diet does not affect cholesterol level. (a) What is the value of the test statistic used in this sign test? (b) What is the critical value in this sign test? (c) What is the correct conclusion of this sign test? O There is sufficient evidence to support the claim that the diet does not affect cholesterol level. O There is not sufficient evidence to support the claim that the diet does not affect cholesterol level. O There is sufficient evidence to warrant rejection of the claim that the diet does not affect cholesterol level. O There is not sufficient evidence to warrant rejection of the claim that the diet does not affect cholesterol level.
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